I've come from a '99 Opel Omega to a 2003 S80 - and I've gotta say, the steering wheel stereo controls are RUBBISH.
On the Omega, they can be accessed from the underside of the wheel - so the hands don't have to be moved from their driving position.
On the S80, the hands have to be removed from the wheel to fumble around (unless you're going to take your eyes off the road to look) for the right control.
Quite amazing, considering how safety-conscious Volvo is.
Just garbage ergonomics - but then, I'm not overly impressed by the S80 cabin anyway: -
- the seat is less than comfortable (forces hunching)
- the pedals are cramped together by wheel-arch intrusion
- the speedo has to be examined at length to ascertain what speed you're doing (half-decent ones make your speed instantly obvious)
- it's not obvious whether the headlights are on (I have to undip the beam to check)
- there's no warning if you open the door with parking/headlights on
- the windows don't auto-close/open on the keyfob
- the clutch pedal is not on the same plane as the brake and throttle
- the doors open with too little force - allowing passing traffic to blow them open
... shameful considering that it's not a great deal better than the Omega - a design some ten years older.